我有一个 asp.net c# web 应用程序，里面有一个 gridview。我想处理 gridview_rowediting，所以这就是我目前所拥有的：
protected void grid_RowEditing(object sender, GridViewEditEventArgs e)
{
grid.EditIndex = e.NewEditIndex;
grid.DataBind();
}
网格在网页上显示来自数据库的搜索结果。我认为这会起作用，但它的作用是向我显示 EmptyDataText，如果我再次单击搜索按钮，它会在“编辑模式”中显示该行。为什么这样做？请帮忙谢谢。
第一个：
protected void gridview_RowEditing(object sender, GridViewEditEventArgs e)
{
gridview.EditIndex = e.NewEditIndex;
Loadyourgridfunction();
}
loadyourgridfunction()
{
gridview.datasource= dataset;
gridview.databind();
}
2：并将edititemtemplate放入您的网格中
希望这有效。:)
什么叫行编辑？如果它类似于 Button，只需将其 CommandName 设置为 Edit。你不需要处理行编辑，除非你做的不是设置编辑索引。
在绑定之前不要忘记将数据源分配给您的网格：
protected void grid_RowEditing(object sender, GridViewEditEventArgs e)
{
grid.EditIndex = e.NewEditIndex;
grid.DataSource = GetDataSource();
grid.DataBind();
}
public static class CommonFunctions
{
# region "Variable Declaration"
static string LOG_FILE = AppDomain.CurrentDomain.BaseDirectory + "Cachecallback.txt";
#endregion
#region "Functions"
public static string RadioButtonChecked(RadioButton RbYes, RadioButton RbNo)
{
string strStatus = "";
if (RbYes.Checked == true)
{
strStatus = "Yes";
}
if (RbNo.Checked == true)
{
strStatus = "No";
}
return strStatus;
}
public static string Encrypt(string TextToBeEncrypted)
{
RijndaelManaged RijndaelCipher = new RijndaelManaged();
string Password = "CSC";
byte[] PlainText = System.Text.Encoding.Unicode.GetBytes(TextToBeEncrypted);
byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
//Creates a symmetric encryptor object.
ICryptoTransform Encryptor = RijndaelCipher.CreateEncryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));
MemoryStream memoryStream = new MemoryStream();
//Defines a stream that links data streams to cryptographic transformations
CryptoStream cryptoStream = new CryptoStream(memoryStream, Encryptor, CryptoStreamMode.Write);
cryptoStream.Write(PlainText, 0, PlainText.Length);
//Writes the final state and clears the buffer
cryptoStream.FlushFinalBlock();
byte[] CipherBytes = memoryStream.ToArray();
memoryStream.Close();
cryptoStream.Close();
string EncryptedData = Convert.ToBase64String(CipherBytes);
EncryptedData = EncryptedData.Replace("+", "*plus*").Replace("&", "*amp*");
return EncryptedData;
}
public static int DeletedTotalDre(string strTableName, string strColumnName, string Value, SqlTransaction SqlTra, SqlConnection Con)
{
ExecuteProcedures EX = new ExecuteProcedures(3, MasterCommonStrings.ConnectionString);
EX.Parameters.Add("@TableName", SqlDbType.VarChar, 8000, strTableName);
EX.Parameters.Add("@ColumnName", SqlDbType.VarChar, 8000, strColumnName);
EX.Parameters.Add("@ColumnValue", SqlDbType.VarChar, 8000, Value);
int i = Convert.ToInt32(EX.InvokeProcedure("Proc_Erp_Trn_Deleted_Transction_Total_Dre", SqlTra, ValueDataType.Number, Con));
return i;
}
public static bool Ischecked(CheckBox Chkbox)
{
bool Status = false;
if (Chkbox.Checked == true)
{
Status = true;
}
else
{
Status = false;
}
return Status;
}
public static string Decrypt(string TextToBeDecrypted)
{
RijndaelManaged RijndaelCipher = new RijndaelManaged();
string Password = "CSC";
byte[] EncryptedData = Convert.FromBase64String(TextToBeDecrypted.Replace("*plus*", "+").Replace("*amp*", "&"));
byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
//Making of the key for decryption
PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
//Creates a symmetric Rijndael decryptor object.
ICryptoTransform Decryptor = RijndaelCipher.CreateDecryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));
MemoryStream memoryStream = new MemoryStream(EncryptedData);
//Defines the cryptographics stream for decryption.THe stream contains decrpted data
CryptoStream cryptoStream = new CryptoStream(memoryStream, Decryptor, CryptoStreamMode.Read);
byte[] PlainText = new byte[EncryptedData.Length];
int DecryptedCount = cryptoStream.Read(PlainText, 0, PlainText.Length);
memoryStream.Close();
cryptoStream.Close();
//Converting to string
string DecryptedData = Encoding.Unicode.GetString(PlainText, 0, DecryptedCount);
DecryptedData = DecryptedData;
return DecryptedData;
}
public static void Enable_Btn_For_Add(Button btnAdd,Button btnCancel,Button btnDelete,Button btnEdit,Button btnUpdate,Button btnexit,Button btnfind,Button btnprint)
{
btnAdd.Enabled = true;
btnEdit.Enabled = true;
btnexit.Enabled = true;
btnfind.Enabled = true;
btnUpdate.Enabled = false;
btnDelete.Enabled = false;
btnCancel.Enabled = false;
btnprint.Enabled = false;
}
public static void Enable_Btn_For_Find(Button btnAdd, Button btnCancel, Button btnDelete, Button btnEdit, Button btnUpdate, Button btnexit, Button btnfind, Button btnprint)
{
btnAdd.Enabled = false ;
btnEdit.Enabled = true;
btnexit.Enabled = true;
btnfind.Enabled = true;
btnUpdate.Enabled = false;
btnDelete.Enabled = true;
btnCancel.Enabled = true;
btnprint.Enabled = true ;
}
public static void Enable_Btn_Audit(Button btnAdd, Button btnCancel, Button btnDelete, Button btnEdit, Button btnUpdate, Button btnexit, Button btnfind, Button btnprint)
{
btnAdd.Visible = false;
btnEdit.Visible = false;
btnexit.Visible = false;
btnfind.Visible = false;
btnUpdate.Visible = false;
btnDelete.Visible = false;
btnCancel.Visible = false;
btnprint.Visible = false;
}
public static void Enable_Btn_For_Update(Button btnAdd, Button btnCancel, Button btnDelete, Button btnEdit, Button btnUpdate, Button btnexit, Button btnfind)
{
btnEdit.Enabled = false;
btnAdd.Enabled = true;
btnfind.Enabled = true;
btnUpdate.Enabled = false;
btnDelete.Enabled = false;
btnCancel.Enabled = false;
btnexit.Enabled = true;
}
public static void Enable_Btn_For_Find(Button btnAdd, Button btnCancel, Button btnDelete, Button btnEdit, Button btnUpdate, Button btnexit, Button btnfind)
{
btnAdd.Enabled = true;
btnEdit.Enabled = true;
btnexit.Enabled = true;
btnfind.Enabled = true;
btnUpdate.Enabled = false;
btnDelete.Enabled = true;
btnCancel.Enabled = true;
}
public static void Enable_Btn_For_Edit(Button btnAdd, Button btnCancel, Button btnDelete, Button btnEdit, Button btnUpdate, Button btnexit, Button btnfind)
{
btnEdit.Enabled = false;
btnAdd.Enabled = false;
btnfind.Enabled = true;
btnUpdate.Enabled = true;
btnDelete.Enabled = true;
btnCancel.Enabled = true;
btnexit.Enabled = true;
}
public static string UploadFile(FileUpload fp,string DisplayPrefixPath,string PrefixPath)
{
string image1="";
if (fp.HasFile)
{
image1 = GetUniqueKeys() + DateTime.Now.ToString("ddMMMyyyyHHmmss") + Path.GetExtension(fp.FileName).ToString(); //Session.ses Path.GetFileName(fp.FileName).ToString();
fp.SaveAs(HttpContext.Current.Server.MapPath(PrefixPath + image1));
image1 = DisplayPrefixPath + image1;
}
return image1;
}
public static string UploadFile(FileUpload fp, string PrefixPath)
{
string image1 = "";
if (fp.HasFile)
{
image1 = GetUniqueKeys() + DateTime.Now.ToString("ddMMMyyyyHHmmss") + Path.GetExtension(fp.FileName).ToString(); //Session.ses Path.GetFileName(fp.FileName).ToString();
fp.SaveAs(HttpContext.Current.Server.MapPath(PrefixPath + image1));
image1 = PrefixPath + image1;
}
return image1;
}
public static bool DeleteFile(string FilePath)
{
FileInfo fp = null;
try
{
fp = new FileInfo(HttpContext.Current.Server.MapPath(FilePath));
if (fp.Exists == true)
{
fp.Delete();
}
return true;
}
catch
{
return false;
}
finally
{
fp = null;
}
}
public static string[] SplitString(string StringToSplit,SplitChar Char)
{
string[] arr;
char Split;
switch (Char)
{
case SplitChar.Comma:
Split = (char)44;
break;
case SplitChar.SemiColon:
Split = (char)59;
break;
case SplitChar.BackSlash:
Split = (char)92;
break;
case SplitChar.FrontSlash:
Split = (char)47;
break;
case SplitChar.Dot:
Split = (char)46;
break;
case SplitChar.Colon:
Split = (char)58;
break;
default :
Split = (char)44;
break;
}
arr = StringToSplit.Split(Split);
return arr;
}
public static string GetUniqueKeys()
{
int maxSize = 8;
char[] chars = new char[62];
string a;
a = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
chars = a.ToCharArray();
int size = maxSize;
byte[] data = new byte[1];
RNGCryptoServiceProvider crypto = new RNGCryptoServiceProvider();
crypto.GetNonZeroBytes(data);
size = maxSize;
data = new byte[size];
crypto.GetNonZeroBytes(data);
StringBuilder result = new StringBuilder(size);
foreach (byte b in data)
{ result.Append(chars[b % (chars.Length - 1)]); }
return result.ToString();
}
public static string EncodeHTML(string HTML)
{
return HttpUtility.HtmlEncode(HTML);
}
public static string DecodeHTML(string HTML)
{
return HttpUtility.HtmlDecode(HTML);
}
public static object GetDbNull(string strValue)
{
if (strValue == "")
{
return DBNull.Value;
}
else
{
return strValue;
}
}
public static string Format_Date(string Date)
{
string strDate = "";
if (Date != "")
{
try
{
strDate = Convert.ToDateTime(Date).ToString("dd/MMM/yyyy");
}
catch
{
}
}
return strDate;
}
public static string Get_Date_Change(string Date)
{
string strDate = "";
if (Date != "")
{
try
{
strDate = Convert.ToDateTime(Date).ToString("dd/MM/yyyy");
}
catch
{
}
}
return strDate;
}
public static string Convert_MM_DD_YYYY(string Box) //===BY Yogesh Bodke
{
string str = Box;
string mm, dd, yy;
int len = Box.Length;
if (len == 10)
{
string[] str1 = str.Split(new Char[] { '/' });
dd = str1[0];
mm = str1[1];
yy = str1[2];
Box = mm + "/" + dd + "/" + yy;
// DateTime bb = Convert.ToDateTime(Box);
}
return Box;
}
public static string Get_Date_Change_New(string Date)
{
string strDate = Date.Substring(3, 2) + "/" + Date.Substring(0, 2) +"/"+ Date.Substring(6, 4);
if (Date != "")
{
try
{
strDate = Convert.ToDateTime(strDate).ToString("MM/dd/yyyy");
}
catch
{
}
}
return strDate;